161047742 has 8 divisors (see below), whose sum is σ = 244062336. Its totient is φ = 79693632.

The previous prime is 161047727. The next prime is 161047751. The reversal of 161047742 is 247740161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 161047699 and 161047708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414878 + ... + 415265.

It is an arithmetic number, because the mean of its divisors is an integer number (30507792).

Almost surely, 2^161047742 is an apocalyptic number.

161047742 is a deficient number, since it is larger than the sum of its proper divisors (83014594).

161047742 is an equidigital number, since it uses as much as digits as its factorization.

161047742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830242.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 161047742 is about 12690.4586993536. The cubic root of 161047742 is about 544.0659499593.

The spelling of 161047742 in words is "one hundred sixty-one million, forty-seven thousand, seven hundred forty-two".